You cannot delete layout set if used as default for users and/or Business Partners.

I am attempting to delete some old layouts from the system however I am getting this error message. You cannot delete layout set if used as default for users and/or Business Partners.I need to find out what Business partners and or users these are defaulted to. I am not having any luck getting this information out of SAP in the form of a query. Other threads referenced a query, however, those tables are not present in SAP 9.2. Can anyone let me know what tables this information resides in now?